Noam Wasserman from HBR studies this extensively and has real data on Startup survival rates under various conditions (including founder size). This book http:

Noam Wasserman from HBR studies this extensively and has real data on Startup survival rates under various conditions (including founder size). This book http://www.noamwasserman.com/book/ http://www.noamwasserman.com/book/ has his results -- I don't have it, and I don't know the results. I saw him give a talk at Business of Software 2-3 years ago -- where he presented a lot of his findings.